حَدَّثَنَا سُرَيْجُ بْنُ النُّعْمَانِ حَدَّثَنَا أَبُو عَوَانَةَ عَنْ أَبِي بِشْرٍ عَنْ سَعِيدِ بْنِ جُبَيْرٍ عَنِ ابْنِ عَبَّاسٍ قَالَ مَا صَامَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ شَهْرًا كَامِلًا قَطُّ غَيْرَ رَمَضَانَ وَإِنْ كَانَ لَيَصُومُ إِذَا صَامَ حَتَّى يَقُولَ الْقَائِلُ وَاللَّهِ لَا يُفْطِرُ وَإِنْ كَانَ لَيُفْطِرُ إِذَا أَفْطَرَ حَتَّى يَقُولَ الْقَائِلُ وَاللَّهِ لَا يَصُومُ
مسند امام احمد بن حنبل · Hadith 2450
It was narrated that Ibn 'Abbas (RA) said: The Messenger of Allah never fasted any month in full except Ramadan, even though he used to fast until one would think: By Allah, he will never stop fasting; and he used not to fast until one would think: By Allah, he will never fast.
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020